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| Criterion |  Facilitation Dot Estimation |  DevOps Blameless Postmortem |  DevOps Game Day |  Operations Learning Review |
|---|---|---|---|---|
Purposedifferent | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | In preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. |
Complexitydifferent | Low | Medium | High | Medium |
Timedifferent | 5-20 min | 30-90 min | Halber Tag | 1-3 h |
Participantsdifferent | 3-20 | 3-12 | 5-20 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Effort Heatmap, Risk Signals, Discussion Targets | Postmortem Doc, Action Items, Timeline | Simulation Notes, Gaps List, Updated Runbooks | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | EstimationEffortRisk | Site Reliability EngineeringIncidentLearningReliability | ResilienceOperationsIncident | LearningRetrospectiveIncidentOperations |